Along green lines, adjacent digits must have a difference of at least 5. The digit in the grey circle is odd.
Enjoy!
Solution code: Row 8, followed by Column 3 (18 digits, no spaces)
on 28. November 2021, 04:07 by Vebby
Superb! Enjoyed the colouring exercise in this one. Thanks Pancake! :)
on 8. November 2021, 03:32 by Polycarp
Wow!!! What a fun puzzle. Very clever. Brilliant use of the German Whispers constraint.
on 8. November 2021, 02:47 by DynastyMaven
loved it
on 6. November 2021, 13:45 by mathpesto
This was a great challenge! Thankfully took me less than Tree(3) minutes to solve :-)
on 6. November 2021, 03:25 by twototenth
Tricky, fun, and very much right up my alley. Excellent work as always!
on 5. November 2021, 21:25 by Göran H
That was a thuroughly fun sudoku that challenged me and forced me to pull a few tricks out of my sleeve. Nice job keeping the pressure up throughout.
on 5. November 2021, 16:30 by ___
a very enjoyable solve overall. thank you PulverizingPancake!